Facebook expands the links in a post with a link preview. However if you want to post in multiple languages then the link preview is the one taken from the language at the top.
Thus you can not have a link preview for each of the languages that you are translating your post, which makes it quite silly to have such a feature of link preview if you cannot have one for each language of your post.
E.g. If I start writing my comment to be posted in English and I add a link to www.cnn.com, the link will be expanded at the bottom, but then when I translate the post and add the French translation even if I add the link www.lemonde.fr in my FR translated comment, the link preview still shows the info about cnn and after posting the users with French as their Facebook language get to see the cnn expanded preview link at the bottom of my post in French.
I find this an overlook from Facebook that has many other buggy features for multilingual content.
Is there a solution or a workaround to allow me to have separate preview links for each language?
I have tried posting separately, one post per language and restricting the language, but after testing this part is buggy as well (e.g. users with language French see posts in English and not the my manually translated post in French).